fix(modal):Modifying the loadingTip property does not work (#396)

Co-authored-by: ssrs <947164239@qq.com>

src/components/Modal/src/BasicModal.vue

@@ -31,6 +31,7 @@
       :fullScreen="fullScreenRef"
       ref="modalWrapperRef"
       :loading="getProps.loading"
+      :loading-tip="getProps.loadingTip"
       :minHeight="getProps.minHeight"
       :height="getWrapperHeight"
       :visible="visibleRef"